Is your ISDN interface on the same network as 10.10.9.5? Maybe try ip route 172.20.20.0 255.255.255.0 BRI0 200 instead. THis will force the BRI interface up if the route is used. Can you do an isdn call command to bring up the isdn manually? Try debug ppp auth and various debug isdn commands, you should be able to find out what is happening. Also, your eigrp network statement is a different network to your static route. Is the static route syntax correct? If I have something incorrect here, pls let me know, as I am trying to learn from your problem too! Symon ------------------- > > My config: > > interface Ethernet1 > > backup delay 0 3 > > backup interface BRI0 > > > > router eigrp 10 > > network 172.26.0.0 > > > > ip route 172.20.20.0 255.255.255.0 10.10.9.5 200 > > That's too skimpy for a reliable diagnostic. Can you post your whole > configuration to the list? (Sanitize as necessary.) > > A few things you may want to try or check: > > - I don't think you need the backup statements in that case. What > triggers dialing using the BRI isn't e1 going down, but traffic to > 172.20.20.0/24 after EIGRP removes the route to that through e1. > > - Is 10.10.9.5 reachable with e1 down? Does pinging it bring up bri0? > > - When you say bri0 doesn't come up, do you mean when e1 goes down, when > the EIGRP route goes away, or when there's traffic for 172.20.20.0/24 > and the route's down? > > On Mon, 4 Jun 2001, KM Reynolds wrote: > > > Hi Everyone, > > > > I need to configure a ISDN link as backup for the primary interface. The > > primary interface is Ethernet1. I researched a numbers of books and they > > all are talk about serial or frame relay interface as the primary. > > I was able to search the archives and I found the identical problem that I > > am encountering. The post stated that yes the BRI0 interface can work as > a > > backup for an ethernet interface. The following is a paste of the post(by > > Howard Berkowitz): > > > > "Yes. The key to the solution is to use a low-overhead routing protocol > such > > as OSPF or EIGRP as a layer 3 keepalive mechanism." > > "Set up OSPF or EIGRP to define a path to the destination using the > > Ethernet. Set up a static route with administrative distance greater than > > that of the routing protocol (at least 200 is a good idea), with this > static > > route going to the next hop address of the remote ISDN interface. > > If OSPF or EIGRP stop seeing hellos across the Ethernet, they will drop > the > > route. The static route will now float up into the routing table, and you > > will get dial-on-demand routing across the ISDN. When OSPF sees its route > > again, after the Ethernet is back up, the Ethernet route will replace the > > ISDN in the active routing table, and the inactivity timer on the ISDN > will > > disconnect it." > > > > I have followed the instructions, but no luck. When I shutdown the > ethernet > > interface the BRI0 backup interface will not come up. > > The question I have are: > > 1. If I administratively shutdown the ethernet interface is that the same > as > > if I disconnected the cable so that the e1 interface will not see a > > keepalive. > > 2. I did not see any other treads as to if solution worked. Has anyone run > > into this situation and has an answer or suggest anything. > > > > My config: > > interface Ethernet1 > > backup delay 0 3 > > backup interface BRI0 > > > > router eigrp 10 > > network 172.26.0.0 > > > > ip route 172.20.20.0 255.255.255.0 10.10.9.5 200 > > > > Lastly, one of the books (Internetworking & Troubleshooting by C. Long) > > stated something about layer 2 and the "no keepalive" option. It didn't > go > > further on this issue and don't know if I understood it. If someone can > > explain, it would be much appreciated. > > > > Sorry for the long post. TIA > > -- > "Someone approached me and asked me to teach a javascript course. I was > about to decline, saying that my complete ignorance of the subject made > me unsuitable, then I thought again, that maybe it doesn't, as driving > people away from it is a desirable outcome." --Me [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=7048&t=7048 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
